AVPlayer kicks device off Airplay

On an Apple TV, if you have an app that triggers a video playing in AVPlayer while another device is air playing to the Apple TV. The device gets disconnected from Airplay and the video plays instead. There doesn't seem to be a way to sense that Airplay is happening or not happening from the Apple TV side programmatically or a way to prevent the behavior. Is this intentional? It would seem to make more sense to have Airplay take priority or push the app to the background.

AVPlayer kicks device off Airplay
 
 
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